UBIFS error (pid: 17522): cannot open "ubi5:Ù", error -19 UBIFS error (pid: 17529): cannot open "ubi5:Ù", error -19 netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.4:17502] Modules linked in: irq event stamp: 146810 hardirqs last enabled at (146809): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (146810): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (146796): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (146783): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (146783): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 0 PID: 17502 Comm: syz-executor.4 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:bytes_is_nonzero mm/kasan/kasan.c:166 [inline] RIP: 0010:memory_is_nonzero mm/kasan/kasan.c:184 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/kasan.c:210 [inline] RIP: 0010:memory_is_poisoned mm/kasan/kasan.c:241 [inline] RIP: 0010:check_memory_region_inline mm/kasan/kasan.c:257 [inline] RIP: 0010:check_memory_region+0xb5/0x170 mm/kasan/kasan.c:267 Code: 74 7b 48 83 38 00 74 f1 48 8d 50 08 eb 09 48 83 c0 01 48 39 d0 74 0e 80 38 00 74 f2 48 85 c0 0f 85 9c 00 00 00 5b 5d 41 5c c3 <48> 85 d2 74 f6 48 01 ea eb 09 48 83 c0 01 48 39 d0 74 e8 80 38 00 RSP: 0018:ffff88809761f118 EFLAGS: 00000283 ORIG_RAX: ffffffffffffff13 RAX: ffffed1012ec3e52 RBX: ffffed1012ec3e54 RCX: ffffffff81763fae RDX: 0000000000000002 RSI: 0000000000000010 RDI: ffff88809761f290 RBP: ffffed1012ec3e52 R08: 0000000000000000 R09: ffffed1012ec3e53 R10: ffff88809761f29f R11: ffffffff8c66501b R12: 0000000000000010 R13: ffff88809761f290 R14: 1ffff11012ec3e99 R15: 0000000000000010 FS: 00007f67783e6700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020fef000 CR3: 000000009a97b000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: memcpy+0x20/0x50 mm/kasan/kasan.c:302 memcpy include/linux/string.h:377 [inline] memcpy_common kernel/events/internal.h:172 [inline] __output_copy kernel/events/internal.h:176 [inline] perf_output_read_group kernel/events/core.c:6221 [inline] perf_output_read+0xd2e/0x1270 kernel/events/core.c:6254 perf_output_sample+0xc1b/0x18f0 kernel/events/core.c:6296 __perf_event_output kernel/events/core.c:6621 [inline] perf_event_output_forward+0x12f/0x270 kernel/events/core.c:6634 __perf_event_overflow+0x13c/0x370 kernel/events/core.c:7907 perf_swevent_overflow kernel/events/core.c:7983 [inline] perf_swevent_event+0x347/0x550 kernel/events/core.c:8011 do_perf_sw_event kernel/events/core.c:8124 [inline] ___perf_sw_event+0x309/0x570 kernel/events/core.c:8155 __perf_sw_event+0x58/0x120 kernel/events/core.c:8167 perf_sw_event include/linux/perf_event.h:1074 [inline] __do_page_fault+0x80e/0xd60 arch/x86/mm/fault.c:1453 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1205 RIP: 0010:copy_user_enhanced_fast_string+0xe/0x20 arch/x86/lib/copy_user_64.S:181 Code: 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 01 ca c3 0f 1f 80 00 00 00 00 0f 01 cb 83 fa 40 0f 82 70 ff ff ff 89 d1 a4 31 c0 0f 01 ca c3 66 2e 0f 1f 84 00 00 00 00 00 0f 01 cb 83 RSP: 0018:ffff88809761fa50 EFLAGS: 00050206 RAX: ffffed1014237ea0 RBX: 0000000000007500 RCX: 0000000000005fcb RDX: 0000000000007500 RSI: 0000000020fef000 RDI: ffff8880a11b9535 RBP: 0000000020fedacb R08: 0000000000000001 R09: ffffed1014237e9f R10: ffff8880a11bf4ff R11: 0000000000000000 R12: ffff8880a11b8000 R13: 0000000020ff4fcb R14: 00007ffffffff000 R15: 0000000000000000 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline] raw_copy_from_user arch/x86/include/asm/uaccess_64.h:71 [inline] copyin+0xcd/0xf0 lib/iov_iter.c:146 _copy_from_iter_full+0x1df/0x7c0 lib/iov_iter.c:724 copy_from_iter_full include/linux/uio.h:124 [inline] skb_do_copy_data_nocache include/net/sock.h:1971 [inline] skb_copy_to_page_nocache include/net/sock.h:1997 [inline] tcp_sendmsg_locked+0x126b/0x2f60 net/ipv4/tcp.c:1364 tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1462 inet_sendmsg+0x132/0x5a0 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:661 __sys_sendto+0x21a/0x320 net/socket.c:1899 __do_sys_sendto net/socket.c:1911 [inline] __se_sys_sendto net/socket.c:1907 [inline] __x64_sys_sendto+0xdd/0x1b0 net/socket.c:1907 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f6779a71109 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f67783e6168 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f6779b83f60 RCX: 00007f6779a71109 RDX: ffffffffffffffef RSI: 0000000020d7cfcb RDI: 0000000000000007 RBP: 00007f6779acb05d R08: 0000000000000000 R09: 0000000000000053 R10: 00000000000001f4 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffc5cfecaf R14: 00007f67783e6300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60 ---------------- Code disassembly (best guess): 0: 74 7b je 0x7d 2: 48 83 38 00 cmpq $0x0,(%rax) 6: 74 f1 je 0xfffffff9 8: 48 8d 50 08 lea 0x8(%rax),%rdx c: eb 09 jmp 0x17 e: 48 83 c0 01 add $0x1,%rax 12: 48 39 d0 cmp %rdx,%rax 15: 74 0e je 0x25 17: 80 38 00 cmpb $0x0,(%rax) 1a: 74 f2 je 0xe 1c: 48 85 c0 test %rax,%rax 1f: 0f 85 9c 00 00 00 jne 0xc1 25: 5b pop %rbx 26: 5d pop %rbp 27: 41 5c pop %r12 29: c3 retq * 2a: 48 85 d2 test %rdx,%rdx <-- trapping instruction 2d: 74 f6 je 0x25 2f: 48 01 ea add %rbp,%rdx 32: eb 09 jmp 0x3d 34: 48 83 c0 01 add $0x1,%rax 38: 48 39 d0 cmp %rdx,%rax 3b: 74 e8 je 0x25 3d: 80 38 00 cmpb $0x0,(%rax)